Hubbell-Raco 509 Gangable 2-1/2-Inch Deep Switch Electrical Box, (2) 1/2-Inch End Knockouts, Old-Work Side Clips, 3-Inch x 2-Inch With proper fitting can be used for nmsc, armored, metal clad, flex cable Switch boxes are used to house wiring devices such as switches or receptacles 12.5Cu. In. Capacity Acceptable for use in two hour fire rated wall The product is ul listed